Electric Potential and Capacitance Quiz
Test your knowledge of electric potential and capacitance concepts. Please answer all questions to the best of your ability.
Participant Name
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Instructions: Answer all questions below. For calculation questions, show your workings where applicable. Select the best answer for multiple-choice questions.
Which of the following best describes electric potential?
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The work done to move a unit charge from infinity to a point in an electric field.
The force experienced by a unit mass in a gravitational field.
The energy stored in a magnetic field.
The rate of change of electric current.
A parallel plate capacitor is connected to a battery. What happens to the capacitance if the distance between the plates is doubled?
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It is halved.
It doubles.
It remains the same.
It quadruples.
Match the following quantities with their correct units:
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Rows
Unit
Electric Potential
Volt (V)
Farad (F)
Coulomb (C)
Joule (J)
Capacitance
Volt (V)
Farad (F)
Coulomb (C)
Joule (J)
Charge
Volt (V)
Farad (F)
Coulomb (C)
Joule (J)
Energy
Volt (V)
Farad (F)
Coulomb (C)
Joule (J)
Calculate the electric potential at a point 0.5 m away from a point charge of 2 μC. (Use k = 9 x 10^9 N·m²/C²)
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Select all statements that are true about capacitors:
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They store energy in the electric field.
They allow direct current to pass through but block alternating current.
Their capacitance increases with larger plate area.
They can be used to filter signals in electronic circuits.
Other
The SI unit of capacitance is:
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Farad (F)
Coulomb (C)
Volt (V)
Ohm (Ω)
Describe one practical application of capacitors in everyday electronic devices.
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A 10 μF capacitor is charged to 12 V. What is the stored energy in the capacitor?
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On a scale from 1 (not confident) to 5 (very confident), how confident are you in your understanding of electric potential and capacitance?
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Not confident
1
2
3
4
Very confident
5
1 is Not confident, 5 is Very confident
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